This layout is a digital model created in Autodesk Alias. It is a 3D model build in virtual space to save me the time and expense of doing it in the shop, and realizing that my assumptions were mistaken. It's also a good way for me to capture what is done in the shop and record my "evolution of thought" (my mistakes) for future reference.
The wheelbase of the Type-69 is 69 inches. This is longer than the other formula designs which I believe will make it more manageable on straight sections. The Type-69 is also wider than other formulas, which is a result of using the scale of the original Bugatti Type-59 design and layout, but reduced in size to this scale (roughly 3/4-scale).
The other benefit of a slightly wider 45" wheel-track is stability. There have been a few hair-raising, pucker-factor-10 'occasions' in our small group of builders that made us more than aware of the inherent risks associated with going fast and driving loose. A few inches wider doesn't hurt the look and still looks period in most cases.
I want to skip the topic of wheels for now, because it's a long topic. Plus there are thousands of supporters of the original wheel/tire package so I don't dare dis-respect them by saying something too editorial. In any case, I like a different set of wheels and tires, we can leave it at that. The wheel/tire package in this design are Marathon Cart wheels, which come with the tires attached for a total of 20" outside diameter, and measure about 2-2.5" wide. They also come standard with a 5/8" ID roller bearing which conveniently fits over Azusa front-axle spindles without any modification.
The occupant is similar to me, I weigh about 220 and stand 6'1" tall. The guy in the picture is a digital mannequin we will refer to as 'Pogo' and weighs 200 lbs and is 6'0" tall.
My goal in sharing this experience is to inspire. It is my belief that there is an evolution of the original Cycle-Kart thought proposed by the Forefathers, Michael Stevenson and the late Peter Stevenson. My thanks for the inspiration provided by the Stevensons, and for the well known April Fools article from R&T. -CW